The Riftwar Saga from Feist was the first fantasy series I ever read, still on my top favorite list. Once you are done with it, read the companion series from Janny Wurtz(or something like that). The individual books after the Riftwar Saga are pretty good too.
I'll also second Battlefield Earth. I read that, thought it was good, then watched the movie. Oh my, what the heck was that?
I really liked a series from Harry Harrison called The Hammer and the Cross, highly recommend it.
Joel Rosenberg's Guardians of the Flame series is great.
I'm in need of a new book to read right now anyway, so I'll be taking some of the suggestions from this thread.